When I try to run ShadersGui/Gui.pde or ColorShaders/Gui.pde I get an error: The function "captionLabel()" does not exist. TextureShaders works fine. <img width="826" alt="screen shot 2019-03-06 at 10 12 51 pm" src="https://user-images.githubusercontent.com/9580532/53936036-63ae1500-405d-11e9-86d7-4016111fedd7.png">