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I need to create a schema with these fields:
1. Title(text type)
2. Image(multimedia type)
2. Color (Red, Blue, Yellow and Green only)
To enable an author to choose any color(background/bgcolor) for components created using this schema and color should be visible like in Paint while creating/editing the component.
Do I need to create a utility or is there some out-of-the-box functionality?
I would first say selecting a color for text is not a very common use case and most organizations prefer to set the style and color using CSS stylesheets to provide a consistent look and feel for the website.
However, I understand your requirement and will provide 3 options:
The Rich Text field has an option to set a color or a CSS class on text.
You could also use a Category called colors and then add color keywords. But, the colors would not be visible.
The last option and probably what you are looking for is a way to pick a color and have that value saved as text field or keyword. The 'color picker' would need to be created and probably best to use a Custom URL to open a popup window where a user would select a color. You could stil use keywords for the color and perhaps put the color hex code in the description of the keyword. On selecting a color the keyword title would be saved into the text field or possibly keyword field. The Tridion Live Documentation has information about creating custom URLs and passing the values back to the field.
Key over Description. The Key field isn't localizable and acts as a "identifier" across publications.
Apr 28, 2013 at 17:36
The safest option is always to head for out of the box but from your question the use case isn't quite clear.
If you simply require a list to be presented to an editor with no context of color etc. - i..e 'just a list' then select the option in the schema field when creating it 'Values will be Selected from a List'.
You can then select whether you want to use a Category/Keyword construct to manage the list or you can add a specific 'Pick list' within the schema field itself. Note that immediately after this you have the option of selecting the method for the user to select (Drop down list, Radio buttons etc.).
The option to specify the list directly in the schema also applies to Robs comment (2) above.
If this is for use in a Rich Text Field then you will need to add more detail into the question above regards the expectations for the user and for the management of future updates/additions etc.
