Color picker transition time set

Using the Gledopto GL-C-007 and the rgb-light-card i can set the colors instantly using the front buttons by adding transition:0 to the options for the color buttons.
But when i use the color picker or temperature slider it will use the builtin delay.

I think i should fix this with templates with the light.on service? since that deals with all the stuff is does on the on state.

But i still have not gotten my head around templates and if its even needed?

Any nudge in the right direction would be much appreciated.