diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/requests/chat/members/PromoteChatMember.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/requests/chat/members/PromoteChatMember.kt
index 2779132d77..06f6fe2b48 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/requests/chat/members/PromoteChatMember.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/requests/chat/members/PromoteChatMember.kt
@@ -15,37 +15,37 @@ data class PromoteChatMember(
     @SerialName(userIdField)
     override val userId: UserId,
     @SerialName(untilDateField)
-    override val untilDate: TelegramDate?,
+    override val untilDate: TelegramDate? = null,
     @SerialName(isAnonymousField)
-    private val isAnonymous: Boolean?,
+    private val isAnonymous: Boolean? = null,
     @SerialName(canChangeInfoField)
-    private val canChangeInfo: Boolean?,
+    private val canChangeInfo: Boolean? = null,
     @SerialName(canPostMessagesField)
-    private val canPostMessages: Boolean?,
+    private val canPostMessages: Boolean? = null,
     @SerialName(canEditMessagesField)
-    private val canEditMessages: Boolean?,
+    private val canEditMessages: Boolean? = null,
     @SerialName(canDeleteMessagesField)
-    private val canDeleteMessages: Boolean?,
+    private val canDeleteMessages: Boolean? = null,
     @SerialName(canInviteUsersField)
-    private val canInviteUsers: Boolean?,
+    private val canInviteUsers: Boolean? = null,
     @SerialName(canRestrictMembersField)
-    private val canRestrictMembers: Boolean?,
+    private val canRestrictMembers: Boolean? = null,
     @SerialName(canPinMessagesField)
-    private val canPinMessages: Boolean?,
+    private val canPinMessages: Boolean? = null,
     @SerialName(canPromoteMembersField)
-    private val canPromoteMembers: Boolean?,
+    private val canPromoteMembers: Boolean? = null,
     @SerialName(canManageVideoChatsField)
-    private val canManageVideoChats: Boolean?,
+    private val canManageVideoChats: Boolean? = null,
     @SerialName(canManageChatField)
-    private val canManageChat: Boolean?,
+    private val canManageChat: Boolean? = null,
     @SerialName(canManageTopicsField)
-    private val canManageTopics: Boolean?,
+    private val canManageTopics: Boolean? = null,
     @SerialName(canPostStoriesField)
-    private val canPostStories: Boolean?,
+    private val canPostStories: Boolean? = null,
     @SerialName(canEditStoriesField)
-    private val canEditStories: Boolean?,
+    private val canEditStories: Boolean? = null,
     @SerialName(canDeleteStoriesField)
-    private val canDeleteStories: Boolean?
+    private val canDeleteStories: Boolean? = null
 ) : ChatMemberRequest<Boolean>, UntilDate {
     override fun method(): String = "promoteChatMember"
     override val resultDeserializer: DeserializationStrategy<Boolean>
diff --git a/tgbotapi.webapps/src/jsMain/kotlin/dev/inmo/tgbotapi/webapps/Colors.kt b/tgbotapi.webapps/src/jsMain/kotlin/dev/inmo/tgbotapi/webapps/Colors.kt
index 7c61897267..270fef6920 100644
--- a/tgbotapi.webapps/src/jsMain/kotlin/dev/inmo/tgbotapi/webapps/Colors.kt
+++ b/tgbotapi.webapps/src/jsMain/kotlin/dev/inmo/tgbotapi/webapps/Colors.kt
@@ -8,7 +8,9 @@ sealed interface Color {
     value class BackgroundColor(override val value: String) : Color
 
     @Serializable
-    value class Hex(override val value: String) : Color
+    value class Hex(override val value: String) : Color {
+        constructor(r: UByte, g: UByte, b: UByte) : this("#${r.toString(16)}${g.toString(16)}${b.toString(16)}")
+    }
 
     companion object {
         val BackgroundColor = BackgroundColor("bg_color")