Different images of sol-fa syllables in music?

Sol-fa syllables are typically represented using the following images:

* Do: A circle

* Re: A triangle

* Mi: A square

* Fa: A rectangle

* Sol: A pentagon

* La: A hexagon

* Ti: A heptagon

However, there are also other images that can be used to represent sol-fa syllables. For example, some people use colors to represent the syllables, while others use hand signs.