○ The Circle Flag, ALT+9 ○○○○○○○○○

The Circle Flag is based upon the ALT+9 key stroke.  You can try it now.  Hold down the ALT key and then press 9, and let go of the 9 key and a circle should pop out.  This usually works with ASCII boards only. ○○○○○

Bullet Point Flag •••••••

In the USA there is not bullet point key?  You don't shift, rather you Alt with a number 7.  Thus the seventh colour of the rainbow codes for the bullet point flag.

ALT+1 and ALT+2, Smiley Flags ☺☻

☺Press ALT+1 and you get a ☺

 
The Smiley flag is based upon the ALT+1 Code.  If you press ALT and 1 on an American Key Board you'll get a white smiley face.  The reason the flag is red is because red is coded to 1, because red is the first colour in the rainbow.  Coincidentally, the assigned contrast indicator is white, and ALT+1 codes for the white smiley face. ☺☻

☻Press ALT+2 and you get a☻

A secondary coincidence is that ALT+2 codes for the black smiley.  Orange is the second colour of the rainbow so it gets an orange background.  The main coincidence is that black is the assigned contrast indicator!

No matter the colour of a person, we can all smile.  Keep that smile in your heart!

☺☻

The Ace Flag of ALT+6 ♠♠♠♠

Everyone loves aces! Normally aces are black but for the Ace Flag of the Alternate Key, it is white.  Reason being, due to colour metrics.  Since blue (or dark blue) is the 6th colour of the rainbow, it is coded to the 6 Alternate Key for the Second Standard of the Columbia. Likewise white is the assigned contrast indicator.

ALT+5 Key, The Club Flag ♣♣♣♣

A red club!  Yes this the flag for the Secret Club Key.  Not really a secret but when you ALT+5 you get into the the club, which is usually black.  The reason it is indigo or cyan is because of the Roy G. Biv.  Blue/Cyan is the 5th colour in the rainbow so the dominant field is cyan.  Red is the assigned contrast indicator.

ALT+4 Key Flag, The Diamond Flag ♦♦♦♦

This diamond flag has a dominant green background.  The reason is, green in the 4th colour in the rainbow and the ALT+4 Key.  The diamond is yellow as the minority contrast indicator for green in yellow.  

ALT+3 Code Flag, Computer Code for the Heart of Things ♥♥♥

♥♥♥

This is a heart flag that is coded to ALT+3 code on American Standard Code II, also known as ASCII.  In this case the colour yellow is coded to three since yellow is the third primary colour of the rainbow.  The heart is blue because blue is the assigned contrast colour indicator.  In this case it should help y'all remember that ALT+3 is coded to the Heart.