---
title: "Changing the Order Colour Scheme"
canonical: "https://docs.rubiconwater.com/space/NVNC/1990525004/Changing%20the%20Order%20Colour%20Scheme"
format: markdown
---
The System Plan Interchange colour scheme controls which colours are used for the various periods within the plan. For example, the plan day is coloured green by default in flow diagrams and histograms. You can create either a default scheme for all plans, or a custom scheme for a specific plan. The process is similar in each case.

- To create a default colour scheme, click **System Plan Interchanges** to open the [https://rubiconwater.atlassian.net/wiki/spaces/CFGNC/pages/2001012744](https://rubiconwater.atlassian.net/wiki/spaces/CFGNC/pages/2001012744).
- To create a custom colour scheme, open the **Interchanges** tab for the plan.

Then follow these steps:

1. Click **Insert** to create a new plan period.
2. Enter the **Plan Offset**. This is the start time of the new plan period measured in hours from the start of the plan day. For example:
  - The offset for the plan day is 0
  - The offset for the day *after* the plan day is 24
  - The offset for the day *before* the plan day is -24
3. Choose a **Colour** for the period.
4. Click **Save** to save your changes.

Create more plan periods as required. The beginning of each plan period is used to define the end of the previous plan period.

---