Possible Flynn Parler Decode
I probably just wasted an hour but maybe another anon will see something I don't.
Black Squares
Binary:
01001000 00000000 01000000 00000000 00010000 00000101 01000001 00001000 10000000 00100000 00000000 01000001 00000000 01000100 00000100
Text:
H�@�A� �A�D
Red Squares
Binary:
00010111 10101011 10110101 10101101 01001101 01111000 10011010 11110111 01101011 11001011 11010111 10010110 01011111 10101010 11111001
Text:
���Mx��k�ז_��
Pink Squares
Binary:
10100000 01010100 00001010 01010010 10100010 10000010 00100100 00000000 00010100 00010100 00101000 00101000 10100000 00010001 00000010
Text:
�T
R��$�((�
I isolated the valid characters, but if its supposed to be a sequence, the order is unknown.
H@AAD
Mxkז_
T
R$((
ז appears to be Zayin, the seventh letter of the Hebrew alphabet, or the number 7 in Hebrew, and is used in modern Hebrew to pronounce "s" in foreign language words and pronouns.
https://en.wiktionary.org/wiki/%D7%96