no. i CAN build - white label in my receipt-book tells me what i MAY.
so - we have
may i - yes, you may
can i - no, you can’t
well - we have same situation.
most likely some conditions haven’t coincided. but to us doesn’t report conditions about which a game knows. probably it is a secret and its publication damage national security 
word as in one Russian song “my dear, good, guess itself”
try switch on the debugging mode - maybe there you will see what conditions you aren’t satisfied.
i think we can or cannot build some in next conditions
1 - this availability of materials in the necessary quantities necessary for production of the fact that it is necessary for us
2 - existence of necessary tools
3 - necessary skill have to be present besides at sufficient degree of competence too
4 …
5 profit!
well “…” is some unknown conditions which deny us to do what we need.
i think - game may not light that tiles which is not fit to conditions.
but game - do it, i.e. light tiles in any case, get us to anger, when sometimes wish to erase game from harddisk.
or - ok - light, but colorise that tiles from that fact - is the tile fit to conditions or not.
red - you may but you can’t
green - you definitely can do it.