fix: correct custom color computation in useProgressClasses

Author: wazeerc

src/components/FwbProgress/composables/useProgressClasses.ts

@@ -45,7 +45,7 @@ export function useProgressClasses (props: UseProgressClassesProps): {
  customColor: Ref<CustomColor | null>
 } {
  const customColor = computed(() => {
- return props.color.value as CustomColor
+ return barColorClasses[props.color.value] ? null : (props.color.value as CustomColor)
  })
  const bindClasses = computed(() => {
  return classNames(