**Title: Automatic Color Assignment by Instrument – Extension of Existing Chart Color Linking**

Hello ATAS Development Team,

I would like to suggest an improvement to the existing chart color-linking functionality.

Currently, users can assign colors to individual charts to organize and link them. However, when working with multiple instruments across numerous chart windows, manually managing these color assignments becomes unnecessarily time-consuming.

Proposed feature: Instrument-based automatic color assignment

I suggest adding an optional feature that allows users to assign a specific color directly to an instrument, rather than assigning colors individually to already opened charts.

For example:

NQ → Red
ES → Blue
YM → Green
GC → Yellow

When an instrument is selected in any chart window, the system would automatically apply its predefined color to that chart's existing color-linking control.

Suggested implementation:

Add a simple color-selection button or dropdown to the instrument selection interface.
Allow users to save a default color for each instrument.
Automatically apply the assigned color whenever that instrument is selected or opened in a chart.
Preserve the existing manual chart color assignment functionality without modification.
Make automatic instrument-based color assignment optional, allowing users to switch between manual and automatic behavior.
Ensure that saved instrument-color assignments persist across platform restarts and workspace reloads.

Ideally, instrument-based colors should also work consistently across different timeframes and chart types, including footprint, range, and standard candlestick charts.

Important: This proposal is not about changing candlestick colors, chart backgrounds, or indicator colors. It is specifically about extending the existing chart color-linking functionality with automatic instrument-based color assignment.

Benefits:

This would significantly improve workspace organization and efficiency for traders who monitor many charts and instruments simultaneously.

Instead of manually assigning colors to every chart, users could define instrument colors once and have the platform automatically manage the assignments.

The existing functionality would remain fully available, while the new option would provide a faster and more intuitive workflow.

Thank you for considering this feature request.