Merge pull request #93 from almndbtr/patch-2

Docs (README): use via.placeholder.com for colors

Author: tintinweb

README.md

@@ -64,7 +64,7 @@ Semantic highlighting and solidity insights for passive security awareness. Most
 * easily differentiate between arithmetics vs. logical operations
 * make **Constructor** and **Fallback** function more prominent
 
-Code fragments passively draw your attention to statements that typically <span style="color:green">*reduce risk* (![#c5f015](https://placehold.it/15/c5f015/000000?text=+))</span> or <span style="color:red">*need your attention* (![#f03c15](https://placehold.it/15/f03c15/000000?text=+))</span>.
+Code fragments passively draw your attention to statements that typically <span style="color:#c5f015">*reduce risk* ![#c5f015](https://via.placeholder.com/15/ccff00/000000?text=+)</span> or <span style="color:#f03c15">*need your attention* ![#f03c15](https://via.placeholder.com/15/f03c15/000000?text=+)</span>.
 
 ##### Semantic Highlighting