chore(docs): use brand colors in badges (#2721)

uses omni brand colors. #consistency

issue: #2712

README.md

@@ -1,7 +1,7 @@
 <h1 align="center">Omni Monorepo</h1>
 
-<p align="center"><a href="https://docs.omni.network/"><img src="https://img.shields.io/badge/Docs-docs.omni.network-blue.svg"></a>
-<a href="https://github.com/omni-network/omni/releases/"><img src="https://img.shields.io/github/release/omni-network/omni.svg"></a>
+<p align="center"><a href="https://docs.omni.network/"><img src="https://img.shields.io/badge/Docs-docs.omni.network-176CFF.svg"></a>
+<a href="https://github.com/omni-network/omni/releases/"><img src="https://img.shields.io/github/release/omni-network/omni.svg?color=176CFF"></a>
 <a href="https://goreportcard.com/report/github.com/omni-network/omni"><img src="https://goreportcard.com/badge/github.com/omni-network/omni"></a>
 <a href="https://github.com/omni-network/omni/actions?query=workflow%3Aci-main"><img src="https://img.shields.io/github/actions/workflow/status/omni-network/omni/ci-main.yaml?label=Tests&logoColor=white" alt="Tests"></a>
 <a href="https://x.com/OmniFDN"><img src="https://img.shields.io/twitter/follow/OmniFDN.svg?label=Follow"></a></p>