I'll have to agree with Spencer on this one.
There is a lot of mis-information on the matter of sound quality and colored vinyl doing the round these days.
Here are a couple of points coming from my experience as both a producer and buyer of records.
1) the basic recording has to be good, you can press on the best quality vinyl with the best possible mastering you want: if your recording is shit, it will turn out shit.
2) beware of lengthy recordings, cramming over 20-25 minutes of material per vinyl side will bring down the quality. I'm not blaming anyone since making a double LP is costly for both label and customer.
3) the mastering : it needs to be mastered by a good studio. Simple as that, there are a lot of amateurs these days.
4) the cutting process by engineers at the pressing plant : if you have good engineers, you are half way there. Beware of cheap pressing plants.
5) The choice of materials : cheap pressing plants use cheaper materials.
6) The choice of vinyl weight. Depending on your plant and choice it goes from 120 to 180 grams.
7) Pressing on 180 gr. vinyl is a good thing but does not give any quality guarantee if the first steps are not respected. I've seen these scams by labels before: re-releasing their back catalog on 180 gr vinyl but using the same crappy recordings. If it sounds like shit on low weight vinyl it will sound the same on 180 gr. vinyl.
8) Color vinyl gives a slightly less quality sound due to a lesser grain used in the materials as opposed to black vinyl. But to be honest, it's hardly heard by the average listener. Pressing plants are catching up and color vinyl used by a good plant will generally sound better than black used by a bad plant.
Glow in the dark is a novelty thing, looks cool but sounds bad. My advise: get both versions. You'll have a cool looking one and a good sounding one.... this brings me to this point: fans expect a cool color vinyl and audiophiles a virgin black version. Most labels like DW try to provide both, problem solved.
9) your gear! crappy speakers, decks, tuners,... kill all efforts made above. Invest in proper gear folks.
Note: do not forget that the recordings labels like mine, DW, ... produce are often over 30 years old. We are doing the best we can to clean em up and make em sound top notch. But it's costly and hard to track down/remaster these old recordings. IF we can find them at all. Sometimes you will need to settle for a bit more 'raw' sounding material (just like the movies they come with). Otherwise I suggest you check out the new Taylor Swift album... I heard that one sounds pretty clean
Seb