I am new to Blender. I have a simple picture (png) which I would like to apply a texture to. But the texture should be applied in a slow rate, and only to parts of the picture along a line or curve. Then I want to capture that animation somehow as a video or something? Sorry if this sounds like a silly question. For example if I have a picture of the number 1 in green. I want to apply a red texture to that 1 from top to bottom along a line, slowly so that it's color changes from green to red. I want to capture this animation somehow. Hope it is clear now.