I would suggest a developer of shaders for Clickteam Fusion 2.5, a list of shaders, see a pack of shaders might be interested.
Having seen much of the other development sites, I found it lacking ...
Well, here is a list of suggestions :
Vignette : Add a kind of radial shape effect in transparency, it's a fashion effect foundable in some games...
Params : (set Width and Height of ovale, set blur, set "turbulence" in blur, set color, set transparency)
Preview (in this idea) : http://i.stack.imgur.com/oKqKy.jpg
Flare lighting : Add a preset shape based on a star that we can rotate it in background, get its little effect in some funny games...
Params : (set branch number, set radius of branch inner, set radius of branch outer, set angle/pivot, set color, set transparency)
Framer : Shows two black rectangles (default) to give a 16:9 image style, convenient for cutscenes
Params : (set height of rectangles, set color)
Watermark : Displays an image in pattern in overlay, useful to protect a demo game or demonstration app...
Params : (Set image, set angle, set scale, set transparency)
After I don't if we can create some specials effects :
Water : Allows to create a "complex" sea or water element, and get a perfect water reflecting effect...
Params : (set reflectivity, set angle, set delta, set emboss, set frequency, set speed, set speed X, set speed Y, set intensity, set transparency)
Rain / Snow : Allows to create a rain or snow trhough frame (by example)
Params : (set image (a strike for rain and a dot blured for snow), set lengh of drop, number of drop, set angle of drop, set speed, etc ...)
Fire : Generate a flame based on params (very nice for torch, firecamp, etc...) in this idea maybe : http://www.rastertek.com/dx11tut33.html
Params : N/A
Preview : http://www.rastertek.com/dx11tut33.html (to see)
With no programming knowledge, I do not know what are the possible develop shaders ...