diff --git a/api/guild.go b/api/guild.go
index d705aa9..8df7e0d 100644
--- a/api/guild.go
+++ b/api/guild.go
@@ -62,7 +62,7 @@ type CreateGuildData struct {
 	// AFKChannelID is the id for the afk channel.
 	AFKChannelID discord.ChannelID `json:"afk_channel_id,omitempty"`
 	// AFKTimeout is the afk timeout in seconds.
-	AFKTimeout option.Seconds `json:"afk_timeout,omitempty"`
+	AFKTimeout discord.OptionalSeconds `json:"afk_timeout,omitempty"`
 
 	// SystemChannelID is the id of the channel where guild notices such as
 	// welcome messages and boost events are posted.
@@ -268,7 +268,7 @@ type ModifyGuildData struct {
 	// This field is nullable.
 	AFKChannelID discord.ChannelID `json:"afk_channel_id,string,omitempty"`
 	// AFKTimeout is the afk timeout in seconds.
-	AFKTimeout option.Seconds `json:"afk_timeout,omitempty"`
+	AFKTimeout discord.OptionalSeconds `json:"afk_timeout,omitempty"`
 	// Icon is the base64 1024x1024 png/jpeg/gif image for the guild icon
 	// (can be animated gif when the server has the ANIMATED_ICON feature).
 	Icon *Image `json:"icon,omitempty"`
diff --git a/api/role.go b/api/role.go
index e63654c..4bb0a55 100644
--- a/api/role.go
+++ b/api/role.go
@@ -124,7 +124,9 @@ type ModifyRoleData struct {
 	// Permissions is the bitwise value of the enabled/disabled permissions.
 	Permissions *discord.Permissions `json:"permissions,string,omitempty"`
 	// Permissions is the bitwise value of the enabled/disabled permissions.
-	Color option.NullableColor `json:"color,omitempty"`
+	//
+	// This value is nullable.
+	Color discord.Color `json:"color,omitempty"`
 	// Hoist specifies whether the role should be displayed separately in the
 	// sidebar.
 	Hoist option.NullableBool `json:"hoist,omitempty"`
diff --git a/discord/message_embed.go b/discord/message_embed.go
index 63fefb6..ff49683 100644
--- a/discord/message_embed.go
+++ b/discord/message_embed.go
@@ -1,11 +1,16 @@
 package discord
 
-import "fmt"
+import (
+	"fmt"
+	"strconv"
+)
 
-type Color uint32
+type Color int32
 
 var DefaultEmbedColor Color = 0x303030
 
+const NullColor Color = -1
+
 func (c Color) Uint32() uint32 {
 	return uint32(c)
 }
@@ -27,6 +32,26 @@ func (c Color) RGB() (uint8, uint8, uint8) {
 	return r, g, b
 }
 
+func (c Color) MarshalJSON() ([]byte, error) {
+	if c < 0 {
+		return []byte("null"), nil
+	}
+	return []byte(strconv.Itoa(c.Int())), nil
+}
+
+func (c *Color) UnmarshalJSON(json []byte) error {
+	s := string(json)
+
+	if s == "null" {
+		*c = NullColor
+		return nil
+	}
+
+	v, err := strconv.ParseInt(s, 10, 32)
+	*c = Color(v)
+	return err
+}
+
 type Embed struct {
 	Title       string    `json:"title,omitempty"`
 	Type        EmbedType `json:"type,omitempty"`
diff --git a/discord/time.go b/discord/time.go
index 8312d09..6758bc1 100644
--- a/discord/time.go
+++ b/discord/time.go
@@ -131,6 +131,18 @@ func (s Seconds) Duration() time.Duration {
 
 //
 
+// OptionalSeconds is the option type for Seconds.
+type OptionalSeconds = *Seconds
+
+// ZeroOptionalSeconds are 0 OptionalSeconds.
+var ZeroOptionalSeconds = NewOptionalSeconds(0)
+
+// NewOptionalSeconds creates a new OptionalSeconds using the value of the
+// passed Seconds.
+func NewOptionalSeconds(s Seconds) OptionalSeconds { return &s }
+
+//
+
 // Milliseconds is in float64 because some Discord events return time with a
 // trailing decimal.
 type Milliseconds float64
diff --git a/utils/json/option/custom.go b/utils/json/option/custom.go
deleted file mode 100644
index 0698b41..0000000
--- a/utils/json/option/custom.go
+++ /dev/null
@@ -1,71 +0,0 @@
-package option
-
-import (
-	"strconv"
-
-	"github.com/diamondburned/arikawa/v3/discord"
-)
-
-// ================================ Seconds ================================
-
-// Seconds is the option type for discord.Seconds.
-type Seconds = *discord.Seconds
-
-// ZeroSeconds are 0 Seconds.
-var ZeroSeconds = NewSeconds(0)
-
-// NewString creates a new Seconds with the value of the passed discord.Seconds.
-func NewSeconds(s discord.Seconds) Seconds { return &s }
-
-// ================================ Color ================================
-
-// Color is the option type for discord.Color.
-type Color = *discord.Color
-
-// NewString creates a new Color with the value of the passed discord.Color.
-func NewColor(s discord.Color) Color { return &s }
-
-// ================================ NullableColor ================================
-
-// Nullable is a nullable version of discord.Color.
-type NullableColor = *NullableColorData
-
-type NullableColorData struct {
-	Val  discord.Color
-	Init bool
-}
-
-// NullColor serializes to JSON null.
-var NullColor = &NullableColorData{}
-
-// NewNullableColor creates a new non-null NullableColor using the value of the
-// passed discord.Color.
-func NewNullableColor(v discord.Color) NullableColor {
-	return &NullableColorData{
-		Val:  v,
-		Init: true,
-	}
-}
-
-func (i NullableColorData) MarshalJSON() ([]byte, error) {
-	if !i.Init {
-		return []byte("null"), nil
-	}
-	return []byte(strconv.FormatUint(uint64(i.Val), 10)), nil
-}
-
-func (i *NullableColorData) UnmarshalJSON(json []byte) error {
-	s := string(json)
-
-	if s == "null" {
-		*i = *NullColor
-		return nil
-	}
-
-	v, err := strconv.ParseUint(s, 10, 32)
-
-	i.Val = discord.Color(v)
-	i.Init = true
-
-	return err
-}