I have been guilty of using plastic plants, bright pink gravel and all sorts of other hideous fish tank ‘accessories’. My community tank in my living room currently includes a ugly large orange “Nemo” figure. (2 year old daughter picked it) I still don’t really put together beautiful setups, but at least now I use natural colored substrate and live plants. I will post photos of them soon even though they are ugly. At least they are fairly ‘natural’ looking.