example:
<b><size=18><color=#fff400>enter text</color></size></b></color></size></b>

18 - text size
#fff400 - text color
color-palettes - https://www.color-hex.com/color-palettes/

Symbols:
⊿ ⌔ ⌚ ■ □ ▲ △ ▶ ▷ ▽ ◀ ◁ ◆ ◇ ○ ● ◥ ◯ ☀ ☁ ☂ ★ ☆ ☉ ☎ ☏ ☕ ☖ ☮ ☹ ☺ ♀ ♂ ⚨ ✈ ✌ ✖ ✚ ✣ ❖❝ ❞ ❤ ❥ ❦ ⤴ ⤵ 〒 ﹋ ɣ æ ♈ ♕ ♗ ♘ ♚ ♛ ♜ ♞ ♟ ♡ ♢ ♤ ♥ ♧ ♩ ♪ ♫ ♬ ♭ ♮ † → ∆ ∇ ∞ ღ ʚ ™ ¢ ® ½ Ƹ̵̡Ӝ̵̨̄Ʒ ♔ ☁ ✂ ☃ ☢ ♈ ♉ ♊ ♋ ♌ ♍ ♎ ♏ ♐ ♑ ♒ஐ ♨ ❦ ☁ ✌ ♛ ❁ ☪ ☂✏ ♝ ❀ ☭☃ ☛ ♞ ✿ ☮ ☼ ☚ ♘ ✾ ☯ ☾☝ ♖ ✽ ✝ ☄ ☟ ♟ ✺ ☥ ✂☭ ✞