No. Commander's color identity rules make it so you can't include a card in your deck if a mana symbol that's not in your commander's color identity is found in the card's rules text, in addition to its mana cost. You can't play Tournament Grounds in Boros because it has a black mana symbol in its rules text, same for Crumbling Necropolis in Izzet.
The one "exception" to this rule (not really an exception, rather an interpretation of technicalities) is Extort on cards like Blind Obedience, which can be put in a nonblack deck because the W/B hybrid symbol is technically not in rules text, only in reminder text (italized and in parenthesis).
I'm a former judge (lapsed), who keeps up to date on rules and policy. Keep in mind that judges' answers aren't necessarily more valid than those of people who aren't judges; what matters is we can quote the rules to back up our answers. When in doubt, ask for such quotes.
The other exception is Urborg, Tomb of Yawgmoth. This land has none of the basic land types and no mana symbols. Mentioning swamps in the rules box is not enough to force a color identity (think creatures with “swampwalk” or how Conversion can go into monocolored white decks).
(W/U)(B/R)GForm of Progenitus, Shape of a Scrubland
BRGJund Tokens with Prossh, the Magic Dragon Foil
URGAnimar, the RUG CleanerFoil
RRRFeldon of the Third Path 2.0 Foil
BG(B/G)Not Another Meren DeckFoil
UR(U/R)Mizzix, Y Control and X Burn Spells
(W/U)(B/R)GHarold Ramos - The 35 Foot Long Twinkie (In +1/+1 counters)
UB(U/B)Dragonlord Silumgar
The one "exception" to this rule (not really an exception, rather an interpretation of technicalities) is Extort on cards like Blind Obedience, which can be put in a nonblack deck because the W/B hybrid symbol is technically not in rules text, only in reminder text (italized and in parenthesis).
(W/U)(B/R)GForm of Progenitus, Shape of a Scrubland
BRGJund Tokens with Prossh, the Magic Dragon Foil
URGAnimar, the RUG CleanerFoil
RRRFeldon of the Third Path 2.0 Foil
BG(B/G)Not Another Meren DeckFoil
UR(U/R)Mizzix, Y Control and X Burn Spells
(W/U)(B/R)GHarold Ramos - The 35 Foot Long Twinkie (In +1/+1 counters)
UB(U/B)Dragonlord Silumgar