Linq to XML, select all attributes and their values for a given node

Question

I have an xml mapping file that looks something like this

Answer 1

as I am pushed for time I will use a 2 stage process

But would be interested to hear if this is possible in one query

var matchingModelXml = from c in mappings.Descendants("model")
                               where (string)c.Attribute("name") == "modelY"
                               select c;

var mappingAttributes = from b in matchingModelXml.Descendants("mapping")
                        where (string)b.Attribute("colour") == "White"
                        select b.Attributes();