All 22B's are
WRC Blue paint code 74F... They were never painted white!!
There was some 2 door World Rally Cars painted white for competition but thats as close as Subaru got with painting any wide body 2 doors white...
There was a Type R and RA 2 door that was painted white but it didn't have the wide arches but it had the 22B style front nostrils on the bonnet.
I believe the article is calling the 99 STi 2 door a 22B, as they were available in Blue, White , Grey and Yellow off the Subaru Floor but only available in Blue and White in Australia.