Impossible to create game

YOU ARE GOD! i will definetely check everything you sent me. And since you understand so much on a side I have a three big questions, maybe you know maybe you dont. Question number 1: is it possible to disable all animations 3d objects and as much as i can from mechanics and 3d world in a project and have only something like a main menu, the purpose of this is that i want to create a software that change text files for movie subtitles - it can move them forward or backwards, I already did the blueprint and used addon for extra nodes and codes that allow me to extract the result in a .txt file in windows folders. However so far to do this I have to open unreal editor and go to project and run the “game” from there to complete the task, i believe it will still work if i extract it as a game but before do this i wonder if i can turn off any features that give the game file size - megabytes. Question no2 - can i make a game that is completely 2D - so far from what I have seen in videos, tutorials and tested myself I still need to give the details some 3D space, also if I make them extra thin they are losing the color or become transparent in most of their parts or completely, Even with tilemaps they still have 3D size and when the camera moves someone may notice the game is not like nintendo mario, instead its a 3d world. (not such a big deal but if its possible i would do completely 2d one). Question no3 is something that i worked to figure it out for long time but i dont see anyone i talked to to achievent result in it, its about colors in the game engine that appears to look different no matter how i try to set up the surface and object material or light sources, if i put red 255 green 0 blue 0 color, the actual result is brighter like red 255 green 50 blue 50 and can never do exact same color (pure red), i already have interesting forum tread about it in here Difference in color - #6 by eldany.uy in short the best i achieved is usng tilemap