kinemaster color not working

The main reason why the colors are not get added in kinemaster is slowness of your mobile or are the version(4.15) of kinemaster.In case of using efficient mobile and another version of kinemaster,go to settings and open device capability information 

click the top right corner three dot button,click on run analysis now,wait for five minutes and it will analysis the device capability.Then add the color and check it.There is a chance for the color to be added.