The Wall Street Journal on Thursday 7 July has a map on the top half of page A6 showing the current distribution of US state legislatures between Democrats and Republicans. It is eye-catching because it uses brite red and blue colors to distinguish between states with Republican and Democrat control of legislatures.
Unfortunately you mimic a convention the left wing press (initially by an aspiring national newspaper best known for its street boxes looking like TV sets) has used since the 1994 takeover of the House of Representatives by the Republicans (after 40 years,) indicating the Democrats as Blue and Republicans as red.
This flew in the face of convention dating back to the birth of modern governments, where the left has always been represented by red (red China, red guards, red Russia, etc.) We have left and right wing parties too, but the left wing party is the Democrats. Blue (the color of the Air Force and the Navy BTW) should be used for the Republicans, red for the left wingers.
As the largest circulation US newspaper, it seems odd that the Wall Street Journal wold fall for this misleading convention. Why not use a convention instantly and naturally recognized by everyone. If that confuses anyone, that's their problem.
I've lived in Detroit, St Louis, Kansas City, Pittsburgh PA, Marblehead MA. Worked as tech rep in Southern CA, Bay area, NYC, I've been to Europe a dozen times (Ireland, UK, Scotland, Sweden, Finland, Belgium.
Favorite restaurants are Gene & Georgetti's in Chicago, Roma Cafe in Detroit, Frankie and Johnie's in NYC, Rigazzi's on the hill in St. Louis (Also Charlie Gitto's, was Angelo's when I went there.)
For about a year I had small offices in Clayton MO, in the Country Club Plaza in KC. I rode a ten-speed bike around Lake Michigan (The bottom half in one week in June 1978, another week for the top half in 1980, used the Badger both times.
Don't get to travel much anymore, but still try to rent a car and go around the Lake in March every year. Sure, there's still snow, and it's not warm, OTOH there are no bugs and no toursts. Greatest little tavern in the world is Sherry's Port Bar in Garden UP MI