Great idea, maybe you could do that!
Just kidding.

I can see how helpful it would be when searching for identities. Some might be difficult to categorize, for example, reddish center with green tips and green center with reddish tips, are they in the same category?

Wouldn't it be cool to have a database where you could input specific characteristics and narrow down the possible candidates? For example, I am looking for a bromeliad that is:
epiphytic/terrestrial/etc./etc.
leaves arranged: star shape/strap-like/grass-like/rosette
striped/spotted/colored tips/zig-zag patterned
(obviously I am not clued into the correct lingo)
small/medium/large
hideously spiney/razor-edged/somewhat spiney/innocuous spines/no teeth
leaves: green/red/pink/purple/burgundy/grey/glaucous/yellow/orange
flowers: branching/cone shaped/inconspicuous/etc./etc.
flower color: pink/yellow/white/purple/orange/etc./etc.

Click on all your picks, and ta-dah! you get a list of possible candidates with photos. Wouldn't that be cool?

That could be an exercise in futility as well, as some plants don't obtain color until A) they are about to bloom or B) they attain a certain level of maturity or C) they get put into lots and lots of sun.

For example, many of the most beautiful and colorful Billbergias that have shades of pink, purple, red, and markings, will not exhibit any of thse wonderful traits if they are grown in too little light.

Bright red Neoregelia "Fireball" will revert to a plain green little brom unless its out in pretty much full sun.

Many, many Neoregelias don't flush with color in the center until they are at bloomstage

Some Dyckias, like the extremely popular "Cherry Coke" are plain green unless put out in full sun, in which case they are RED

Orthophytum "Galactic Warrior" loses the pink color in its tricolor leaves if the light gets too low, and it doesn;t get the brilliant red center until it blooms.

Color can also depend on composition of the soil a plant gets potted or planted into, if its grown as an epiphyte, or if it gets fertilizer or not.

You can make a website classifying bromeliads into what color they are SUPPOSED to be, that might be easier.

Hi Bromelians, I agree with you Bihai, as here in quite hot Bangkok city where I live, my Neo. are not as colourful as yours. Only that grown in the North province could be enhanced by cooler weather. That would be the reason why I fall in love with those spiny Dickia or Hechtia, but any how, there is some colour problem with my Hechtia stenopetala, he never be a Red Chameleon as in the catalog here!!

Chanin