Conditional text

Hello everyone,

How can I make just plain text conditional and depending on custom field value?

Let′s say I have custom field with the name “Do you like blue or black?”, possible values being, well “blue” and “black”. If the value is blue, there′s another custom field with the name: “What kind of blue” with values like “navy”, “deep”, etc.

Now, those fields show on posts like this:

• Blue or black: <?php echo c2c_get_custom(‘blueorblack’); ?>
• What kind of blue: <?php echo c2c_get_custom(‘whatblue’); ?>

How can I make it so that when the value for first question is “black”, the “what kind of blue:” text is not shown?

As you can see I use get custom fields plugin, but it is not necessary if the solution should to be done without it.

Hopefully I made sense with this, after all I presume this is nothing too complicated, but just can′t get my head around it.